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| n | a(n) |
|---|---|
| 3 | 56 |
| 4 | 630 |
| 5 | 3780 |
| 6 | 16170 |
| 7 | 55440 |
| 8 | 162162 |
| 9 | 420420 |
| 10 | 990990 |
| 11 | 2162160 |
| 12 | 4424420 |
| 13 | 8576568 |
| 14 | 15872220 |
| 15 | 28217280 |
| 16 | 48430620 |
| 17 | 80582040 |
| 18 | 130423524 |
| 19 | 205931880 |
| 20 | 317983050 |
| 21 | 481180700 |
| 22 | 714864150 |
| 23 | 1044323280 |
| 24 | 1502250750 |
| 25 | 2130464700 |
| 26 | 2981938050 |
| 27 | 4123173600 |
| 28 | 5636967336 |
| 29 | 7625605680 |
[56,630,3780,16170,55440,162162,420420,990990, 2162160,4424420,8576568,15872220,28217280, 48430620,80582040,130423524,205931880,317983050, 481180700,714864150,1044323280,1502250750, 2130464700,2981938050,4123173600,5636967336, 7625605680] |